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# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import default_flavor
"""GN flavor utils, used for building Skia with GN."""
class GNFlavorUtils(default_flavor.DefaultFlavorUtils):
def supported(self):
extra_config = self.m.vars.builder_cfg.get('extra_config', '')
return any([
extra_config == 'GN',
extra_config == 'Fast',
extra_config.startswith('SK')
])
def compile(self, unused_target, **kwargs):
"""Build Skia with GN."""
compiler = self.m.vars.builder_cfg.get('compiler', '')
configuration = self.m.vars.builder_cfg.get('configuration', '')
extra_config = self.m.vars.builder_cfg.get('extra_config', '')
gn_args = []
if configuration != 'Debug':
gn_args.append('is_debug=false')
cc, cxx = 'cc', 'c++'
cflags = []
if compiler == 'Clang':
cc, cxx = 'clang', 'clang++'
elif compiler == 'GCC':
cc, cxx = 'gcc', 'g++'
ccache = self.m.run.ccache()
if ccache:
cc, cxx = '%s %s' % (ccache, cc), '%s %s' % (ccache, cxx)
if compiler == 'Clang':
# Stifle "argument unused during compilation: ..." warnings.
cflags.append('-Qunused-arguments')
if extra_config == 'Fast':
cflags.extend(['-march=native', '-fomit-frame-pointer'])
if extra_config.startswith('SK'):
cflags.append('-D' + extra_config)
cflags = ' '.join(cflags)
gn_args += [ 'cc="%s %s"' % (cc, cflags), 'cxx="%s %s"' % (cxx, cflags) ]
run = lambda title, cmd: self.m.run(self.m.step, title, cmd=cmd,
cwd=self.m.vars.skia_dir, **kwargs)
run('fetch-gn', [self.m.vars.skia_dir.join('bin', 'fetch-gn')])
run('gn gen', ['gn', 'gen', self.out_dir, '--args=%s' % ' '.join(gn_args)])
run('ninja', ['ninja', '-C', self.out_dir])
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